Poster Number 178
See more from this Division: Topical Sessions
See more from this Session: Soil Geochemistry: Databases and Applications at Regional to Continental Scales (Posters)
Abstract:
Observed variation in concentrations of K, Na, Ca, Mg, Ti, Fe, and Al is generally related to pedogenic processes occurring in the semi-arid landscapes along the transect. Elements such as Rb, Ba, and Sr are enriched in the C horizon and may be related to the presence of barite at some localities.
Data for Al, Ca, Na, and K have been used to determine a chemical alteration index (CAI) and a plagioclase alteration index (PAI). Plotting values of these indices along the transect enables us to distinguish different grades of weathering at each sampled locality.
This study showed the variation in soil maturity in different landscapes from the diverse physiographic and climatic settings found along the transect.
See more from this Division: Topical Sessions
See more from this Session: Soil Geochemistry: Databases and Applications at Regional to Continental Scales (Posters)